CAS OpenIR  > 中科院上海应用物理研究所2011-2018年
Enormously improved CH3NH3PbI3 film surface for environmentally stable planar perovskite solar cells with PCE exceeding 19.9%
Yang, YG; Feng, SL; Li, M; Li, FC; Zhang, CC; Han, YJ; Li, L; Yuan, JY; Cao, L; Wang, ZK; Sun, BQ; Gao, XY
2018
Source PublicationNANO ENERGY
ISSN2211-2855
Volume48Pages:10-19
Subtype期刊论文
AbstractOne of the most important factors governing the photovoltaic efficiency and environmental stability of Perovskite Solar Cells (PSCs) is the quality of their perovskite films. However, the present study demonstrates that CH3NH3PbI3 perovskite films after anti-solvent washing are far from perfect on the surface, where the crystallization degree is quite low with complex multi-phases associated with numerous defects and notable chemical inhomogeneity. Herein, we report a novel anti-solvent washing treatment simply using Hydrogen Iodide (HI) additive in chlorobenzene (CB) which can enormously improve CH3NH3PbI3 films surface with high crystallization phase purity and chemical homogeneity, leading to excellent structural stability under humidity, heat and even tensile force. Based on such high quality films with defect-less surface, fabricated planar PSCs with an architecture of ITO/TiO2/CH3NH3PbI3/Spiro-OMeTAD/MoOx/Au present a champion PCE of 19.94% and improved stability under humidity. Moreover, fabricated flexible planar PSCs on PET/ITO substrates with a champion PCE of 17.32% are shown to be more robust under tensile force than their control devices. The present study thus not only provides more insight into the facile defects passivation process on the surface achieved via balancing halide ions, but also provides a practical but efficient treatment which can be widely used to fabricate high quality CH3NH3PbI3 films for environmentally stable high performance device applications.
KeywordOrganometal Halide Perovskite High-efficiency Performance Crystallization Hysteresis Conversion Lifetime Defects Cation Layer
DOI10.1016/j.nanoen.2018.03.046
Indexed BySCI
Language英语
WOS IDWOS:000432604600002
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/29003
Collection中科院上海应用物理研究所2011-2018年
Affiliation1.Yang, YG
2.Feng, SL
3.Li, M
4.Li, FC
5.Zhang, CC
6.Han, YJ
7.Li, L
8.Yuan, JY
9.Cao, L
10.Wang, ZK
11.Sun, BQ
12.Gao, XY
Recommended Citation
GB/T 7714
Yang, YG,Feng, SL,Li, M,et al. Enormously improved CH3NH3PbI3 film surface for environmentally stable planar perovskite solar cells with PCE exceeding 19.9%[J]. NANO ENERGY,2018,48:10-19.
APA Yang, YG.,Feng, SL.,Li, M.,Li, FC.,Zhang, CC.,...&Gao, XY.(2018).Enormously improved CH3NH3PbI3 film surface for environmentally stable planar perovskite solar cells with PCE exceeding 19.9%.NANO ENERGY,48,10-19.
MLA Yang, YG,et al."Enormously improved CH3NH3PbI3 film surface for environmentally stable planar perovskite solar cells with PCE exceeding 19.9%".NANO ENERGY 48(2018):10-19.
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